Lee Soon-Kyu known by stage name Sunny 써니 born on May 15, 1989 is a Korean-American singer, radio DJ, dancer, music show host, model, musical actress and member of the Korean girl group Girls' Generation. The group was formed by SM Entertainment in 2007.
Sunny was born on May 15, 1989 in Horn Lake, and moved to Kuwait when she was an infant. Her family moved to South Korea around the time of the Gulf War. She has two older sisters, who share the same birthday as her but born in different years. She speaks fluent Korean, along with basic Chinese and basic Japanese. Her father was in the college band Hwaljooro with Bae Chul-soo. She is the niece of Lee Soo Man, the founder of SM Entertainment. In 1998, Sunny entered Starlight Entertainment and became a trainee for 5 years before transferring to Starworld where she became a member of a duet called "Sugar" which never debuted. One of her older sisters was the manager for Sugar, but when the duo disbanded, she became active in other parts of the music industry. In 2007, she was recommended by the singer Ayumi, who transferred to SM Entertainment. After several months of training under SM Entertainment, Sunny debuted as a member of Girls' Generation that same year.